Instructions:
1.To find out the best size for you, right mouse-click on your desktop, select 'properties,' a pop window will appear; select 'settings' and note the dimensions in the section called 'screen area.
2. Select the dimensions of the picture most appropriate for your screen resolution. Right click the correct link above and save to your desktop.
3. Open the picture and right click on the image.
4. Choose 'Set as Wallpaper' from the menu that appears.